Buehrle, 34, entered the 2013 season with 10 or more wins and 30 or more starts in 12 straight seasons. He has a career record of 176-135 with a 3.86 ERA in 432 games (407 starts). Buerhle signed a four-year, $58 million free agent contract with Miami before the 2012 season then was traded to Toronto along with shortstop Jose Reyes, pitcher Josh Johnson, infielder Emilio Bonifacio and catcher John Buck last winter in exchange for seven players in a major salary dump. He is 1-0 lifetime against the Padres and at Petco Park with a 0.54 ERA (one run in 16 2/3 innings) in two starts. The 6-foot-2, 245-pound Buerhle was the 38th-round pick of the Chicago White Sox in 1998.

Erlin, 22, was recalled from Triple-A Tucson early Saturday morning to make Richard’s scheduled start. Erlin was scheduled to start for the T-Padres Saturday night. Erlin was 4-0 with a 4.79 ERA in eight starts for Tucson. He was with the Padres from April 25-May 1 and appeared in two games against the Cubs in Chicago, allowing two runs on three hits over two innings. He made his major league debut on April 30.